FAST DATA TRANSFER: This PCI Express to firewire adapter reduces performance bottlenecks by offering support for data transfer rates up to 400Mbps to each port | VERSATILE USE: Each 2 port PCI express 1394a firewire card comes pre-configured for low-profile and includes two full-profile brackets for versatile use with low profile and standard computer cases | INCREASE CAPACITY: This PCIe serial port card allows you to add two FireWire 400 connections to your desktop computer using one PCIe expansion card slot | WIDE COMPATIBILITY: For broad compatibility the PCIE firewire adapter supports Windows and macOS 10. 10-10. 13 and includes full profile and half height installation brackets | THE STARTECH ADVANTAGE: StarTech offers a 2-year and free lifetime technical support on this PCIe 1394 card and has been the IT pro’s choice since 1985